PIC17C756A MICROCHIP [Microchip Technology], PIC17C756A Datasheet - Page 172

• Manufacturer Part Number: PIC17C756A
• Description: High-Performance 8-bit CMOS EPROM Microcontrollers with 10-bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC17C7XX
FIGURE 15-36:
FIGURE 15-37:
DS30289B-page 172
SDA
SCL
SEN
S
BCLIF
SSPIF
S
BCLIF
SSPIF
SDA
SCL
SEN
’0’
’0’
SCL = 0 before BRG time-out,
Bus collision occurs, Set BCLIF.
BUS COLLISION DURING START CONDITION (SCL = 0)
BRG RESET DUE TO SDA COLLISION DURING START CONDITION
Set SEN, enable START
sequence if SDA = 1, SCL = 1.
SDA pulled low by other master.
Reset BRG and assert SDA.
’0’
Less than T
BRG
SDA = 0, SCL = 1
SDA = 0, SCL = 1
T
BRG
Set SEN, enable START
sequence if SDA = 1, SCL = 1.
SDA = 0, SCL = 1
Set SSPIF.
S
Set S
T
BRG
T
BRG
SCL = 0 before SDA = 0,
Bus collision occurs, Set BCLIF.
Set SSPIF
SCL pulled low after BRG
Time-out.
Interrupts cleared
in software.
’0’
’0’
Interrupts cleared
in software.
2000 Microchip Technology Inc.